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diff --git a/Source/WebCore/page/animation/CompositeAnimation.h b/Source/WebCore/page/animation/CompositeAnimation.h
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+/*
+ * Copyright (C) 2007 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CompositeAnimation_h
+#define CompositeAnimation_h
+
+#include "ImplicitAnimation.h"
+#include "KeyframeAnimation.h"
+#include <wtf/HashMap.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/text/AtomicString.h>
+
+namespace WebCore {
+
+class AnimationControllerPrivate;
+class AnimationController;
+class RenderObject;
+class RenderStyle;
+
+// A CompositeAnimation represents a collection of animations that are running
+// on a single RenderObject, such as a number of properties transitioning at once.
+class CompositeAnimation : public RefCounted<CompositeAnimation> {
+public:
+    static PassRefPtr<CompositeAnimation> create(AnimationControllerPrivate* animationController)
+    {
+        return adoptRef(new CompositeAnimation(animationController));
+    };
+
+    ~CompositeAnimation();
+    
+    void clearRenderer();
+
+    PassRefPtr<RenderStyle> animate(RenderObject*, RenderStyle* currentStyle, RenderStyle* targetStyle);
+    PassRefPtr<RenderStyle> getAnimatedStyle() const;
+
+    double timeToNextService() const;
+    
+    AnimationControllerPrivate* animationController() const { return m_animationController; }
+
+    void suspendAnimations();
+    void resumeAnimations();
+    bool suspended() const { return m_suspended; }
+    
+    bool hasAnimations() const  { return !m_transitions.isEmpty() || !m_keyframeAnimations.isEmpty(); }
+
+    void setAnimating(bool);
+    bool isAnimatingProperty(int property, bool acceleratedOnly, bool isRunningNow) const;
+
+    PassRefPtr<KeyframeAnimation> getAnimationForProperty(int property) const;
+
+    void overrideImplicitAnimations(int property);
+    void resumeOverriddenImplicitAnimations(int property);
+
+    bool pauseAnimationAtTime(const AtomicString& name, double t);
+    bool pauseTransitionAtTime(int property, double t);
+    unsigned numberOfActiveAnimations() const;
+
+private:
+    CompositeAnimation(AnimationControllerPrivate* animationController)
+        : m_animationController(animationController)
+        , m_numStyleAvailableWaiters(0)
+        , m_suspended(false)
+    {
+    }
+
+    void updateTransitions(RenderObject*, RenderStyle* currentStyle, RenderStyle* targetStyle);
+    void updateKeyframeAnimations(RenderObject*, RenderStyle* currentStyle, RenderStyle* targetStyle);
+    
+    typedef HashMap<int, RefPtr<ImplicitAnimation> > CSSPropertyTransitionsMap;
+    typedef HashMap<AtomicStringImpl*, RefPtr<KeyframeAnimation> >  AnimationNameMap;
+
+    AnimationControllerPrivate* m_animationController;
+    CSSPropertyTransitionsMap m_transitions;
+    AnimationNameMap m_keyframeAnimations;
+    Vector<AtomicStringImpl*> m_keyframeAnimationOrderMap;
+    unsigned m_numStyleAvailableWaiters;
+    bool m_suspended;
+};
+
+} // namespace WebCore
+
+#endif // CompositeAnimation_h